ClassDefNotFound exception using android library project as reference

Question

I have an android library project and I want to reference it from another project. The library project contains activities and xml layouts. I have added its reference as following MyProject properties-->Java Build Path--> projects like this enter image description here

and in order and exports its listed like this

enter image description here

but when I try to call an activity from referenced project, I get exception, and here is the stacktrace

05-05 15:01:20.246: E/AndroidRuntime(6669): FATAL EXCEPTION: main
05-05 15:01:20.246: E/AndroidRuntime(6669): java.lang.NoClassDefFoundError: jp.co.kom.android.ezimage.EZImageActivity
05-05 15:01:20.246: E/AndroidRuntime(6669):     at com.example.ezimgtest.MainActivity.openEZImage(MainActivity.java:56)
05-05 15:01:20.246: E/AndroidRuntime(6669):     at com.example.ezimgtest.MainActivity$1.onClick(MainActivity.java:29)
05-05 15:01:20.246: E/AndroidRuntime(6669):     at android.view.View.performClick(View.java:4234)
05-05 15:01:20.246: E/AndroidRuntime(6669):     at android.view.View$PerformClick.run(View.java:17363)
05-05 15:01:20.246: E/AndroidRuntime(6669):     at android.os.Handler.handleCallback(Handler.java:615)
05-05 15:01:20.246: E/AndroidRuntime(6669):     at android.os.Handler.dispatchMessage(Handler.java:92)
05-05 15:01:20.246: E/AndroidRuntime(6669):     at android.os.Looper.loop(Looper.java:137)
05-05 15:01:20.246: E/AndroidRuntime(6669):     at android.app.ActivityThread.main(ActivityThread.java:4970)
05-05 15:01:20.246: E/AndroidRuntime(6669):     at java.lang.reflect.Method.invokeNative(Native Method)
05-05 15:01:20.246: E/AndroidRuntime(6669):     at java.lang.reflect.Method.invoke(Method.java:511)
05-05 15:01:20.246: E/AndroidRuntime(6669):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004)
05-05 15:01:20.246: E/AndroidRuntime(6669):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771)
05-05 15:01:20.246: E/AndroidRuntime(6669):     at dalvik.system.NativeStart.main(Native Method)

why dont you use android studio?

Amrut Bidri
– Amrut Bidri

2015-05-05 07:13:52 +00:00
Commented May 5, 2015 at 7:13 — Amrut Bidri
– Amrut Bidri, Commented May 5, 2015 at 7:13

Santhosh · Accepted Answer · 2015-05-05 07:10:16Z

1

I think your activity EZImageActivity is declared in liberary manifest.Actual case androidManifest.xml merging is supported in version 20 of the ADT tools. Enable with the manifestmerger.enabled property.

more details

answered May 5, 2015 at 7:10

Santhosh

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Community · Accepted Answer · 2017-05-23 11:51:15Z

0

Check if you have included that class in manifest.

Also check the following answer,

NoClassDefFoundError for code in an Java library on Android

edited May 23, 2017 at 11:51

CommunityBot

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answered May 5, 2015 at 6:10

aiRbornE

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4 Comments

AddyProg Over a year ago

Do I need to add all activities of referenced project to my current project's manifest ?

aiRbornE Over a year ago

Not current project's manifest but the library project's manifest

AddyProg Over a year ago

I have added all activities of library project in its manifest file

aiRbornE Over a year ago

Please check this answer as well. stackoverflow.com/questions/7994715/…

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